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Inequalities for ultraspherical polynomials and application to quadrature

✍ Scribed by Klaus-Jürgen Förster


Book ID
107989013
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
668 KB
Volume
49
Category
Article
ISSN
0377-0427

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Duffin and Schaeffer Type Inequality for
✍ Borislav Bojanov; Geno Nikolov 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 280 KB

## We show that in the uniform norm for every real algebraic polynomial f of degree n which satisfies the inequalities | f (x)| |P (:, :) n (x)| at the points x of local extrema of the ultraspherical polynomial P (:, :) n in [&1, 1].